Thank you for reaching out and also supporting LightBurn. We sent you a follow-up email with further instructions. It reads:
Have you configured the systems in question to use the floating license? You do this from the command line. You should have been sent these instructions when you purchased the floating key:
If the systems are not set up using a command terminal in administrator mode (or using sudo on the Mac) they won’t ‘hold’ the license key. If you’re just entering it through the UI in the license management page in LightBurn, that only works for that session, and you’d have to do it every time you run the software.